Can any one tell me if I can run a Geforce 6600 graphics card with 256MB ram on a Mercury PI845GLM-AGP motherboard which have an AGP 4x slot. Plz. reply only if u have seen that graphics card is absolutely running on the above mentioned board with out no problems and mention the web address if any. Currently I have a gigabyte 5200 gfx with 128MB ram model name: GVN52128DS which is a agp 8x card

I know that agp 8x cards works with 4x slot but would that 6600 card particularly work with my mobo.

Its pretty simple,u need to buy a BIGGER power supply.Well all that also happens if u don't have upgraded drivers & BIOS.But first of all read FAQS of ur motherboard.According to me if ur older card worked & u have same manufacturer(nVidia),it should work,just these better cards need BIGGER PSU.So consider a 400 watt(commonly available) PSU.

Here is my mobos necessary stuffs download page with the manual:http://www.mercury-pc.com/downloads_list.php?productid=455
In the manual it page no:21 it says" mercury has tested upto Nvdia 5950 and
ATI radeon 9800 with this mobo. The updated list can be found at www.kobian.com" which i was unabe to find.

Dude! i understand what are u asking.And u want someone with the same motherboard with 6600 running perfectly on it.But thats not just gonna happen because there are not many people with the same motherboard & the same graphics card & if there are people then they might not be on www.thinkdigit.com.Its a risky game that u have to play & its ur luck that it just work fine.
And u have another option like u can call or mail MERCURY people & they will clarify your query.

it will work..........
No problems at all.........
i remember using this combo on mercury 865 mb till it met its sad demise...
you sure about 845 though and it is not 865???
whatever dude it will work go ahead....... the results will not be as you are hoping it to be but it will work.........
use atleast 400watt psu though even cheap will work.........
peace
raj

I dont think a 6600 (128-bit) will work on ur mobo cuz ur mobo doesnt support 128-bit gfz cards.ur mobo uses the PCI bus for communication with gfx card instead of AGP bus.My frnd had a prob with a 845 mobo and 128-bit 6600GT.His pc just wont boot with a 128-bit gfx card.Its better to buy a 64-bit gfz card for ur pc.

i remebered something it might help you.....
last month i saw a biostar motherboard intel 845 chipset along with PCI-E (XAGP 16x) and sata raid/ide for pga 478 processors... it was around 2200rs i think..
In case you donot want to upgrade your cpu but still wanna have a gfx card option here is what you can do .....
go for that biostar motherboard....... Now you will have mercury mb to spare worst case it will fetch you 1K atleast as lot of guys look for pga motherboard... dent will be for 1.2K for now...
next you can go for any of the cards listed below........
they are last months prices you will get it in vicinity of these prices only...

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Now if you choose any of the above graphics card say 7300 which is better than what you originally seek.... you will be dented for 3000 + 1200 = 4.2K ...........

PS: you can even get a second hand PCI-E they are not expensive and Rare like their AGP counterparts....
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consider the pros and cons........
+you will be updated
+you will get a better performance
+You will get Sata option
+Warranty on New motherboard
+The things that will not get obsolete at higher rate (considering PCI-E is here to stay and AGP is meeting it awaited end........)

- higher dent to pockets.......
- more hassle to upgrade and sell motherboard.........
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So it will be upto you to decide and experiment though what@assain said is true but i still think that you cann't be sure until you experiment (Afterall experince is the best teacher) computer hardware may or may/may not have the ability to adap to lower grade........ Depends upon the design actually as some might be overclocked or underclocked for same reasons....... As a general rule ..... The better is the manufacturer and product..... better will be its compatibilty and ability to adapt.... and i seriously doubt that mercury (Kobian) is one of the good manufactrers.............

^^^ Its not a case that u can run a 128-bit 8x AGP card in a 4x AGP slot.The plob lies in the 845 chipset.Its primary architecture doesnt support a AGP bus,instead it uses the pci bus to communicate with AGP card.So most 845 mobos with agp slot has a gfx card compatibility list and most 845 mobos wont work with a 128-bit AGP card.

yeah...a 5950 is better than a 6200...(performance wise)
but...5950 is a very old card...no sense goin for it now..especially when AGP production is halted...
i would advise u to upgrade your mobo to 1 having pci-e
5950 will b far below average with dx 10 games..